Review—Ion Interference and Elimination in Electrochemical Detection of Heavy Metals Using Anodic Stripping Voltammetry

Yang, Yixuan; Huang, Ya-Lin; Luo, Huimin; Zhao, Jia; Bi, Junping; Wu, Genyi

doi:10.1149/1945-7111/acd1ba

Cited by 9 publications

(5 citation statements)

References 50 publications

(69 reference statements)

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“…Bismuth and mercury can form molten alloys with zinc ions, which facilitate the stripping processes of Zn 2+ on the electrode surface [ 30 ]. This molten alloy enhances the current response, resulting in more sensitive and accurate measurement.…”

Section: Resultsmentioning

confidence: 99%

“…The ASV test was conducted, the electrochemical process is shown in Figure 3. The heavy metal ions were first elec deposited on the surface of the BDD electrode under a certain voltage by reduction ions can form molten alloys with target heavy metal ions, enhancing the current respo [30]. During the deposition process, the sample flowed through the thin-layer cell and electrode surface at a constant flow rate.…”

Section: Methodsmentioning

confidence: 99%

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A Novel Thin-Layer Flow Cell Sensor System Based on BDD Electrode for Heavy Metal Ion Detection

Xiao,

Zhai,

Shen

et al. 2024

Micromachines

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An electrochemical sensor based on a thin-layer flow cell and a boron-doped diamond (BDD) working electrode was fabricated for heavy metal ions determination using anodic stripping voltammetry. Furthermore, a fluidic automatic detection system was developed. With the wide potential window of the BDD electrode, Zn2+ with high negative stripping potential was detected by this system. Due to the thin-layer and fluidic structure of the sensor system, the electrodepositon efficiency for heavy metal ions were improved without using conventional stirring devices. With a short deposition time of 60 s, the system consumed only 0.75 mL reagent per test. A linear relationship for Zn2+ determination was displayed ranging from 10 μg/L to 150 μg/L with a sensitivity of 0.1218 μA·L·μg−1 and a detection limit of 2.1 μg/L. A high repeatability was indicated from the relative standard deviation of 1.60% for 30 repeated current responses of zinc solution. The system was applied to determine Zn2+ in real water samples by using the standard addition method with the recoveries ranging from 92% to 118%. The system was also used for the simultaneous detection of Zn2+, Cd2+, and Pb2+. The detection results indicate its potential application in on-site monitoring for mutiple heavy metal ions.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

A Novel Thin-Layer Flow Cell Sensor System Based on BDD Electrode for Heavy Metal Ion Detection

Xiao,

Zhai,

Shen

et al. 2024

Micromachines

View full text Add to dashboard Cite

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“…These methods have the advantage of working with a small sample quantity and without pretreatment of the sample [5]. Anodic s tripping voltammetry (ASV) with mercury drop or mercury film electrodes is the mos t widely used method for determining trace metal concentrations in electrochemis try [6,7]. Since manganese is poorly soluble in mercury and requires a high overpotential to be deposited on mercury, this method presents some analytical challenges for manganese determination [8].…”

Section: Introductionmentioning

confidence: 99%

Removal of manganese (II) in water samples by the aeration-filtration process and determination based on 5-Br-PADAP ligand by cathodic stripping voltammetry

Ayouba Mahamane,

Guel,

Fabre

2024

Anal. Method Environ. Chem. J.

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In this study, manganese (Mn II) was determined in aqueous media by an electrochemical method, and its removal was evaluated using the aeration-filtration process (AFP). An electrochemical sensor based on carbon paste (EPC) modified with the 5-Br-PADAP ligand was used to measure Mn (II) in aqueous media. Through the optimization of analytical parameters in cathodic stripping voltammetry (CSV), real boreholes and well water samples could be analyzed for manganese content. The optimum parameters such as preconcentration potential (1100 mV), preconcentration time (240s), 5-Br-PADAP ligand concentration (20 µmol L-1), and electrode rotation speed during pre-concentration (1000 rpm) were studied and optimized. The detection limit (LOD) is estimated at 3 ´10-7 mol L-1 with a relative standard deviation (RSD) of 3.36%. The real samples showed that some water points have more concentration than the standard. A simple, effective, inexpensive, and rural-friendly method was used for treating manganese-rich water. Following the aeration phase, the sand and gravel column was filtered to remove manganese (II) from the water. The removal efficiency of Mn was obtained at a rate of 74.8- 84.5% and more than 95% after two hours of aeration and 1 hour at pH 8 for real samples.

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“…However, ion-selective electrodes operating under potentiometry can typically be operated for several months [24]. Moreover, voltametric sensors can be sensitive to interference, especially in complex media such as food samples [25].…”

Section: Introductionmentioning

confidence: 99%

Ion-Selective Electrodes in the Food Industry: Development Trends in the Potentiometric Determination of Ionic Pollutants

Ruiz-Gonzalez

2024

Electrochem

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Food quality assessment is becoming a global priority due to population growth and the rise of ionic pollutants derived from anthropogenic sources. However, the current methods used to quantify toxic ions are expensive and their operation is complex. Consequently, there is a need for affordable and accessible methods for the accurate determination of ion concentrations in food. Electrochemical sensors based on potentiometry represent a promising approach in this field, with the potential to overcome limitations of the currently available systems. This review summarizes the current advances in the electrochemical quantification of heavy metals and toxic anions in the food industry using potentiometric sensors. The healthcare impact of common heavy metal contaminants (Cd2+, Hg2+, Pb2+, As3+) and anions (ClO4−, F−, HPO4−, SO42−, NO3−, NO2−) is discussed, alongside current regulations, and gold standard methods for analysis. Sensor performances are compared to current benchmarks in terms of selectivity and the limit of detection. Given the complexity of food samples, the percentage recovery values (%) and the methodologies employed for ion extraction are also described. Finally, a summary of the challenges and future directions of the field is provided. An overview of technologies that can overcome the limitations of current electrochemical sensors is shown, including new extraction methods for ions in food.

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Review—Ion Interference and Elimination in Electrochemical Detection of Heavy Metals Using Anodic Stripping Voltammetry

Cited by 9 publications

References 50 publications

A Novel Thin-Layer Flow Cell Sensor System Based on BDD Electrode for Heavy Metal Ion Detection

A Novel Thin-Layer Flow Cell Sensor System Based on BDD Electrode for Heavy Metal Ion Detection

Removal of manganese (II) in water samples by the aeration-filtration process and determination based on 5-Br-PADAP ligand by cathodic stripping voltammetry

Ion-Selective Electrodes in the Food Industry: Development Trends in the Potentiometric Determination of Ionic Pollutants

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